Fluid-pressure device.



No. 787,421. I PATENTED APR. 18, 1905. L. WOERNER.

FLUID PRESSURE DEVICE.

APPLICATION FILED JUNE 17, 1904.

' 2 SHEETS-SHEET 1.

4 No. 787,421. PATENTED APR. 18, 1905.

L. WOERNER.

FLUID PRESSURE DEVICE.

APPLICATION FILED JUNE 17, 1904.

2 SHEETSSHEET 2.

MHM aooeo amwmtom Leo Woerner. 7

92M, elk-W @X g UNITED STATES Patented April 18, 1905.

LEO OERNER, OF ST. LOUIS, MISSOURI.

FLUID-PRESSURE DEVICE.

SPECIFICATION forming part of Letters 1 atent No. 787,421, dated April18, 1905.

Application filed June 17, 1904. Serial No, 212,956.

T0 all whom it 771.0441 concern.

Be it known that I, LEO VVOERNEE, a citizen of the United States,residing at the city of St. Louis, in the State of Missouri, haveinvented a certain new and useful Fluid-Pressure Device, of which thefollowing is such a full, clear, and exact description as will enableany one skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawing forming part ofthis specification.

My invention relates to adevice which will be responsive to variation offluid-pressure and which may be used either in connection with asuitable signal to give an alarm when the pressure is either too high ortoo low or with a suitable valve mechanism forautomatically regulatingthe pressure.

My invention consists in various novel features and details ofconstruction, all of which are described in the following specificationand pointed out in the claims affixed hereto.

1n the accompanying drawings, Figure 1 is a central section through thedevice, also showing diagrammatically a signal device. Fig. 2 is a viewsimilar to Fig. 1, but showing the device connected with a valvemechanism. Fig. 3 is an enlarged side elevation, and Fig. 4 is anenlarged section, of the valve shown in Fig. 2.

Like marks of reference refer to similar parts in the several views ofthe drawings.

represents an annular member, preferably of cast metal. This annularmember 10 is provided with four short lugs 11 and with a long lug 12.Secured to the annular member 10 by means of bolts 14 are a pair ofdiaphragms 15, preferably of thin sheet-brass. The ring 10, togetherwith the diaphragm 15, form a chamber for the fluid, either liquid orgaseous, the pressure of which is to be indicated or regulated. Leadinginto this chamber is an. inlet 16.

17 is a pipe which extends from the inlet 16 to the reservoir containingthe fluid.

18 represents a pair of spiders which are secured by bolts 19 to thefour short lugs 11, heretofore referred to. Each of the spiders 18 isprovided at its center with a guideway 20, in which slides a rod 21.These rods 21 are secured, by means of nuts 22, to the diaphragms 15.

Between the diaphragm and the spiders 18 and surrounding the rods 21 arecoilsprings 23. These coil springs 23 tend to force the diaphragms 15toward each other.

25 is a yoke which is secured to the lug 12. Pivoted to one end of thisyoke 25 at a point 26 is a short lever 27, and pivoted to the other endof the said yoke at a point 28 is a long lever 29. These levers 27 and29 are in turn pivoted to the ends of the rods 21, hereinbeforedescribed.

30 is an arm pivoted to the lug 12 at a point 31. The arm 27 isconnected to the arm 30 by means of a link 32, and the lever 29 isconnected with the said arm by means of a link 33.

When it is desired to use the device to operate a signal to give analarm when the pressure is either too great or too small, the arm 30 isprovided with a pair of contact-pieces 35, as shown in Fig. 1. Thesecontact-pieces are adapted to come in contact with adjustable terminals36 when the arm 30 is moved a predetermined distance in eitherdirection. The two upper terminals 36 are connected by means of aconductor 37 and the two lower terminals by means of aconductor 38. Theconductors 37 and 38 are connected by means of a conductor 39,containing a battery 40 or other suitable force of electrical energy anda bell 41 or other signal device for giving an alarm. It will be evidentthat when the arm 30 is moved a suflicient distance in either directionone of the contacts 35 will bridge two of the terminals 36, thuscompleting the circuit through the bell and sounding the alarm.

In Fig. 2 the device is shown as connected to a valve mechanism forautomatically regulating the pressure of the fluid. The valve iscomposed of an outer part or shell 45 and an inner part or plug 46. Theplug 46 is provided with an arm 47, which engages with a slot 48 in thearm 30. The shell 46 of the valve is provided with a port 49, whichleads to the reservoir containing the fluid. 50 is a supply-port, and 51is a discharge-port. The inner part or plug 46 is provided with a Y-shaped port having one branch, 52, adapted to be placed in communicationeither with the supply-port 50 or the discharge-port 51, and twobranches 53, which are adapted to be brought into communication with theport 4E9, leading to the reservoir. It will be seen that when thepressure is normal, so that the diaphragms 15 stand substantiallyparallel, as shown in Fig. 1, the ports 52 and 53 will be in positionshown in dotted lines in Fig. 4, and the fluid will neither be admittedto or from the reservoir. In case the pressure becomes too great thediaphragms will be forced apart against the pressure of the springs 23,as shown inFig. 2, and consequently the arm 30 will be moved to theleft, as shown in said figure, and the plug 46 of the valve will beturned, as shown in Fig. L, to connect the reservoir with thedischarge-port 51. In case the pressure should become too small thediaphragms will be forced together by the springs 23 and the valve wouldbe moved in the opposite directions to connect the port 49 with thesupply 50.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent ot' the United States, is-

1. The combination with a member, of a pair ol diaphragms secured tosaid member and forming therewith a chamber for the fluid, a pair oflevers pivotally supported from said member at points intern'iediate oftheir length, connections between said levers and said diaphragms, anarm having a pivot fixed with relation to said member, and connectionsbetween said levers and arm at each side of said pivot.

2. The combination with a member, of a pair of diaphragms secured tosaid member and forming therewith a chamber for the liuid, a yokesecured to said member, levers pivoted to said yoke, rods connectingsaid diaphragms and levers, a pivoted arm, and links connecting saidlovers with said arm.

3. The combination with an annular member, of a pair of diaphragmssecured to said member and forming therewith a chamber for the fluid, apair of spiders secured to said annular member, rods carried by saiddiaphragms and sliding in said spiders, a pair of lovers pivoted to saldrods, an arm having a plvot fixed with respect to said annular member,

and links connecting said levers with said arm 5. The combination withan annular member, of a pair of diaphragms secured to said member andforming therewith a chamber for the fluid, a pair of guides carried bysaid member, rods secured to said diaphragms and sliding in said guides,a pair of fixed arms carried by said member, levers pivoted to said armsand to said rods, an arm having a pivot fixed with relation to saidmember, and links connecting said levers with said pivoted arm at eachside of said pivot.

6. The combination with an annular member, of a pair of diaphragmssecured to said annular member and forming therewith a chamber for thefluid, a pair ol spiders carried by said annular member. rods secured tosaid dia1')hragms and sliding in said spiders, a pair of fixed armscarried by said member, levers pivoted to said arms and to said rods, anarm having a pivot lived with relation to said annular member, and linksCOHIIGCtll'lQ, said levers with said pivoted arm at each side of saidpivot.

7. The combination with a member, of a pair of diaphragms secured tosaid member and forming therewith a chamber for the fluid, a pair 01guides carried by said member, rods secured to said diaphragms andsliding in said guides, a pair of fixed arms carried by said member, apair of lovers each pivoted at a point intermediate of its length to oneo 1 said fixed arms, each lever also having one end pivoted to saidrods, an arm pivoted at a point intermediate 01 its length to saidmember, a link connecting one of said levers to said pivoted arm at oneside of its pivot, and a second link connecting the other of said leversto said pivoted arm at the other side ol its pivot.

8. The combination with a member, ol a pair of diaphragms secured tosaid member and formingtherewith a chamber for the fluid, a pair ofguides carried by said member, springs interposed between saiddiaphragms and guides, rods secured to said diaphragms and sliding insaid guides, a pair ol fixed arms carried by said member, a pair oflevers each pivoted at a point intermediate ol its length to one of saidarms, each lever also having one end pivoted to one of said rods, an armpivoted at a point intermediate of its length to said member, a linkconnecting one of said levers to said pivoted arm at one side of itspivot, and a second link connectii'ig the other lever to said pivotedarm at the other side of its pivot.

In testimony whereof I. have hereunto set I my hand and afiixed my sealin thepresence of the two subscribing witnesses.

LEO \VOERNER. [1,. s

\Vitnesses:

M. L. BONFILS, l). (l. BELJEMAN.

